<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        let ages =[]
       for(let i=1 ;i<=5 ; i++){
        let age = prompt(`请输入第${i}个用户的年龄`)
       } 
    </script>
</body>
</html>